Sewing-machine attachment for overedge-stitching.



No. 678,907. Patented my 23, lem.

T. H. nnss & E. noNALnsoN.

SEWING MACHINE ATTACHMENT FOR OVEREDGE STITCHING.

(Application led Oct. 2, 1900.) (No Model.) 3 Sheets-Sheet l.

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Patented July 23, I90I.

T. H. RUSS & E. DONALDSON. SEWING MACHINE ATTACHMENT FUR OVEBEDGESTITCHING.

E 3 sheets-sheet 2,

(Application med Oct. 2, 1900.) (N 0 M 0 d el a/L my, M www,

N0. 678,907. Pafntedluly 23, IS. T. H. ROSS & E. DONALDSON. SEWINGMACHINE ATTACHMENT FUR OVEREDGE STITCHING.

(Application led Out. 2, 1900.) (No Model.) v 3 Sheets-Sheet 3.

Witnesses UNITED STATES PATENT EETCE.

THOMAS H. ROSS AND EDWIN DONALDSON, OF BROOKLYN, NEV YORK, ASSIGNORS TOTHE ROSS ATTACHMENT AND MACHINE COMPANY, OF

NEV YORK, N. Y.

SEWING-MACHINE ATTACHMENT FOR OVEREDGE-STITCHING.

SFEQTFLTGA'EION forming part of Letters Patent N0. 678,907, dated July23, 1901.

Application tiled October 2, 1900. Serial No. 31,771. (No model.)

To all whom, it may concern:

Beit known that we, THOMAS H. ROSS, a subject of the Queen of GreatBritain, and EDWIN DONALDSON, a citizen of the United States, bothresidents of Brooklyn, in the county of Kings and State of New York,have invented certain new and useful Improvements in Sewing-MachineAttachments for Overedge-Stitching, of which the following is a full,clear, and exact description, such as will enable those skilled in theart to which it appertains to make and use the same, referencebeing hadto the accompanying-drawings, forming a part of this specification.

The invention relates to improvements in sewing machine attachments ofthat class which are used for intermittently diverting the course of thefabric from its path of travel through the line of reciprocation of theneedle for the purpose of forming overedge-stitches.

The invention consists in the novel construction, combination, andarrangement of.

parts, such as will be hereinafter fully described, pointed out in theappended claims, and illustrated inthe accompanying drawings.

In the accompanying drawings, in which similar reference charactersdesignate corresponding parts, Figure 1 is a perspective view of auattachment embodying the invention, showing it mounted on the work-plateof a sewing-machine in conjunction with the presser-foot andneedle-bars. Fig. 2 is a sectional view on the line 2 2 of Fig. 3. Fig.3 is a sectional view on the line 3 3 of Fig. 2. Fig. 4 is a detail viewshowing the cam for operating the pusher-bar. Fig, 5 is a similar Viewshowing the cam and lantern-gear. Fig. 6 is a similar View showing thepusher-bar.

-Fig.7 is an enlarged View showing a side elevation of the attachment.Fig. 8 is a similar view showing a plan of the device except thefabric-guide. Fig. 9 is a detail View showing the plate forming thebearing for the thumb-nut of the adjusting-screw. Fig. 10 is a similarView showing the adjustingscrew. Fig. 11 is asectional view on the line1l 11 of Fig. 12. Fig. 12 is a plan View showing the fabric moved clearof the needle by the pusher-bar. In this view for the sake Only so muchof the sewing-machine is shown as is necessary to illustrate theoperation of the attachment. The work-plate A, the needle-bar A', andthe presser-foot bar A2 may be of any construction suitable in thepremises. In the needle-bar is secured the usual needle A2 by theset-screw A4. On

vthe lower end of the bar A2 is attached the presser-foot, which will behereinafter particularly described. On the work-plate A is secured theattachment adjacent to the presser-foot and the needle-bars and also insuch aposition that the face B of the base B will be adjacent to andparallel with the line of travel taken by the fabric being stitched. Theface B" of the base is provided with a tapering groove B2 to facilitatethe-passage of the fabric.

Mechanism for adj ustably securing the attachment to the work-plate isprovided. The base B has an extension C, provided with a recess C,through which the screw C2 is adapted to pass, and by clamping the basebetween its head and the work-plate serves to hold the attachment inplace. The shank of the screw passes through an eye in the end of thescrew-threaded rod C3. The latter lies partly within the recess C andprojects at its screw-threaded end beyond the same. On thisscrew-threaded rod is a thumb-nut C4, provided with a journal C5. Aplate C6 is hinged at one end, as at C7, to one of the arms of theextension C and is adapted to be turnedv down across the opening of therecessl C'. rIt is provided with a bearing C8 for the journal C5 of thethumb-screw, and at its free endthe plate has a recess C9 for engagementwith the screw C10 to hold it in place. By slightly loosening theclamping-screw C2, so that the attachment can be moved with some littlefriction, and by turning the thumb-nut C4 the attachment can be movedmore or less relatively to the clamping-screw, and thereby roo adjustedto accommodate the fabric to be stitched more accurately and quickerthan it could be by simply loosening the clampingscrew and moving theattachment by hand. It may be stated that these adjustments have to bemade within a small fraction of aninch,

as they are measured according to the thickjected at right angles fromthe face B of the base into the path of travel of the fabric and theline of movement of the needle. At its forward end the pusher-bar isbifurcated, as at D2, to register with the needle when the latterdescends and when the pusher-bar is in an advanced position.

D3, secured to the base B and extending into the recess D4. The movementof the-pusherbar is limited by the length of the recessD and the widthofthe plate registering with it. Projecting from the side of thepusher-bar arethe extensions or uprights D5, which ex-V tend upwardlythrough the recess D6 in the base.A The pusher-bar is normally held in aretracted position. by the spring D7, secured.V

atvone end to the base and engagingV at the other end with one of theuprights D5. The pusher-bar is reciprocated by the three-sided cam E,rotated between the uprights D5. The camisv mounted on the end of thelanterngear Ef and turns with the same. A screw E2 passes through thecam and gear, forming an axis for the same, and is turned into theangle-plate E3, secured to the base. The lantern-gear has six teeth orspokes, one foreach side and each angle of the cam E, so that by turningthe said gear the distance between two` teeth or one-sixth of a rotationat a time the angles and the sides of the cam' are alter,- nately andsuccessively brought` to bear on the-forward upright D5, so that thepusherbaris reci-p rocated back and forth against the action of thespring D7. If the spring D7 should notact with certainty to retract thepusher-bar, the cam will acton the lrear upright D5 and move thepusher-bar to the rear. The spring DT also serves to take up anylostmotion when the cam is acting on both uprights, and thereby preventsnoise.

Mechanism for rotating the lan tern-gear E' is provided. On the base Bis mounted the standard F, and in the face of the latter is the verticalguideway F', in which moves the slide-bar F?, from the upper end ofwhich the armF3 projects. The slide-bar is normal-ly held in a loweredposition by a member of the whistle-spring F4, secured to the standardF.

The pusher-bar is, held in. place in the guideway by the plate Theslide-bar is reciprocated vertically and against the action of thewhistle-spring by the set-screw A4, carried by the needle-bar engagingwith the arm F5 as the machine is operated. To the lower end of theslide-bar is pivoted the pawl F5, the lower end of which is normallyheld in a position to engage with the lantern-gear E by the other memberof the whistle-sprin g F4, which engages with the upper end of the pawlabove the latters pivotal point. The formation of the pawl is such thaton the downward movement it disengages from the spoke of thelantern-gear and on its upward movement engages with the succeedingspoke or tooth. By the reciprocation of the pawl the lantern-gear isgiven one-sixth of a complete rotation at each upward movement, so thatan angle and a side of the three-.cornered cam are successively broughtto bear on the forward upright D5, and the pusher-bar therebyreciprocated. To limit the movement of the lantern-gear, a spring F6 isprovided, which bears againstvsaid gear and acts as a brake. Thevertical movement of the slide-bar is limitedr by the pin F7 projectingfrom the standard F and registering with the elongated slot F8 in theslide-bar.

Mechanism is provided to aid in securing -fthe attachment in itsadjustments on the work-plate and also relatively to the presserfoot. Onthe lower end of the bar A2 isattached the presser foot or shoe H by thesetscrew H'. The presser-foot has a projection H? extending from itsheel. Transversely through the extension an opening extends, and in thesame is placed the horizontal arm H3 of the angular rod H4. This arm isheld in placek in the presser-foot by the set-screw H5. The vertical armH6 enters the vertical opening H7 of the extension H8 of the base of theattachment. The length of the arm H6 and the depth of the opening H7 aresuch that the rod will always be in register with the opening as thepresser-foot is raised or lowered.

A fabric-guide is provided to aid the operator in folding and guidingthe goodsV tor be operated upon as they are fed into the machine. Thisguide consists of two members G and Gf, respectively, hinged together bythe hinge G2. The members are held in their relatively-adjustedpositions by the spring G3, secured to the lower me-mber and bearing atits free ends on the squared ends of the pintle G4, projecting from theends of the hinge. G2. The pintle is made fast to the uppermember G, sothat whenA the said member is turned the spring by bearing on the iiatparts of the pintle will hold the said meniber in position. The relativearrangement ot the -flat parts of the pintle is such that the springwill hold the upper member parallel with and above the lower member atright angles to the lowermember or turned back from the same. The uppermember is slightly bent upward at its free end and is IOC IIO

- machine is started.

curved in the direction taken by the goods in passing through themachine, so as to offer the least resistance possible to the passage ofthe fabric. Sometimes it may be desired to adjust the fabric-guiderelatively to the attachment. This can be done by loosening the screwsG5 and moving the guide to the desired position, which is permitted bythe elongated slots GG, through which the screws pass into the base ofthe attachment.

The operation of the device is as follows: To adjust the attachment toadapt it to the thickness of the goods to be stitched, the screws C2 andH5 are loosened and the attachment is moved by hand approximately to theproper position. To accommodate a thick fabric, for instance, theattachment should be adj usted so that there will be quite a spacebetween the face B' of the base and the line of movement of the needle.As shown in the drawings, the attachment is shown in an adjustmentsuitable for goods of medium thickness. After the screws have beenloosened and the attachment adjusted by hand as near as may be to theproper position, then the clamping-screw C2 is turned into the baseplateto bind the attachment slightly. By turning the thumb-nut C4 more orless an almost accurate adjustment of the attachment can be secured, sofar as the proper distance from the line of travel of the needle isconcerned, although it may not be exactly parallel with the line oftravel of the goods or the presser-foot. However, by turning theattachment slightly by hand on t'he screw C2 as an axis it can be movedparallel with the line of travel of the fabric or with the presserfoot.After it has been so turned the setscrews C2 and H5 are turned torespectively clamp the attachment to the work-plate and to secure thehorizontal arm H3 in the presserfoot. NVhen it is desired to make sergestitching, for example, the fabric is folded, as shown in Figs. l1 to13, inclusive, and placed under the presser-foot in the ordinary way.The fabric-guide, which is open during the preliminary folding, isclosed and the As the fabric is fed forward, the guide enables theoperator to make the fold to a better advantage than he could withoutsuch assistance. The fabric is fed across the Work-plate in the usualmanner. The operation of the needle and pusher-bar is as follows: It isassumed that the needle is in an elevated position and that thepusherbar is retracted, as shown in Figs. 13 and 14. The needle descendsand passes through the bight of the cloth and the edge beneath the same.On the return stroke of the needlebar through the intervening mechanismthe pusher-bar is advanced and forces the cloth from beneath the needleand the latter descending on the succeeding stroke passes through thebifurcated end of the pusher-bar outside of the cloth. These twooperations are respectively repeated alternately. It is obvious that theattachment is adapted to other forms and patterns of stitching,depending on the way in which the fabric is folded and the way it is fedthrough the machine.

Having thus described the invention, what we claim, and desire to secureby Letters Patent, is-

1. In a sewing-machine attachment, a base provided with a guideway, apusher-bar movable in said guideway, a standard mounted on said base andprovided with a guideway, a slide-bar movable in said guideway of thestandard and adapted to be reciprocated by the needle-bar of asewing-machine, means for limiting the movement of said slide-bar, a camengaging with said pusher-bar to reciprocate the same, a gear forrotating said cam, and a pawl carried by said slide-bar for rotatingsaid gear.

2. In a sewing-machine attachment, a base provided with a horizontalguideway,a pusherbar movable in said horizontal guideway, a standardmounted on said base provided with a vertical guideway, a slide-barmovable in said vertical guideway and adapted to be reciprocated by theneedle-bar of a sewing-machine and provided with a vertical slot, a pinprojecting from said standard and registering with said slot to limitthe vertical movement of said slide-bar, a spring pressing said slidebardownward, and mechanism for conveying motion from said slide-bar to saidpusher-bar for reciprocating the latter.

3. In a sewing-machine attachment, a base provided with a horizontalguideway,a pusherbar movable in said horizontal guideway, a cam engagingwith said pusher-bar to reciprocate the same, a gear for rotating saidcam, a standard mounted on said base provided with a vertical guideway,a slide-bar movable in said vertical guideway and adapted to bereciprocated by the needle-bar of a sewingmachine and having a verticalslot, a pin projecting from said standard into said slot for limitingthe vertical movement of said slidebar, a spring pressing said slide-bardownward, and a pawl carried by said slide-bar adapted to engage withsaid gear to rotate the same.

4. In a sewing-machine attachment, a base provided with a guideway, apusher-bai' movable back and forth in said guideway, a standard mountedon said base and provided with a guideway, a slide-bar movable in saidguideway in the standard and adapted to be reciprocated by theneedle-bar of a sewing-machine, a cam engaging directly with saidpusher-bar for positively moving the same in both directions, a gear forrotating said cam, and a pawl carried by said slide-bar for rotatingsaid gear.

5. In a sewing-machine attachment, a base provided with a guideway, apusher-bar movable back and forth in said guideway, a standard mountedon said base and provided with a guideway, aslide-bar movable in saidguideway in the standard and adapted to be recip- IOO IIO

IZO

rocated by the needle-bar of a sewing-machine, extensions carried bysaid pusher-bar, a cam mounted between said extensions and adapted tobear on one or the other for positively moving said pusher-.bar in bothdirections, a gear for rotating said cam, and a pawl carried by saidslide-bar for rotating said gear.

6. In aseWing-machine attachment,apnsher bar movable back and forth,acam engaging directly with said pusher-bar for positively moving thesame in both directions, a gear for rotating said cam, a slide-baradapted to be reciprocated by the needle-bar of a sewing-machine, and apawl carried by said slidebar and adapted to engage with said gear torotate the same.

7. In a sewing-machine attachment, a base provided with a recess, ascrew-threaded rod placed in said recess and provided with a collar, atits inner end, a clamping-screw pass- Aing through said collar, athumb-nut turned onsaid rod and having a journal, and a bearingcarried-by said base for said journal.

8. In asewing-machine attachment, a base, a bearing carried by saidbase, al thumb-nut journaled in said bearing, a clamping-screw adaptedto be turned into a work-plate, and a screw -threaded rod engaging withsaid clamping-screw and engagedv by said thumbnut.

9. In a sewing-machine attachment, a base provided With a recess,- aplate hinged to said base and having a bearing, a thumb-n ut journaledin said bearing, a screw-threaded rod placed Within said recess having acollar at its Vinner end and engaged by said thumbnut, and aclamping-screw passing through said collar.

10. In aseWing-machineattachment,abase, a plate attached to said baseprovided with a bearing and having a notch in its edge adjacent to saidbearing, a thumb-nut journaled in said bearing and provided with notchesin its periphery adapted to register with said notch in the plate whenthe thumbnnt is turned, a clamping-screw, and a screwthreaded rodconnected with said clampingscrew and engaged by said thumb-nut.

11. In a sewing-machine attachment, the combination of a presser-foothaving a transverse horizontal opening, the base of an attachmentprovided with a vertical opening, an angular rod having one ofitsmembers placed in the opening in the presser-foot and the other memberinserted in the vertical opening in the base and adapted to be moved` upand down therein, and means for securing said rod in the presser-foot.

12. ln a sewing-machine attachment,a base, a guide consisting of twomembers hinged together and adj ustably attached to said base, apintlefor the hinge connection between said members made fast to one ofthe same and having flat portions, and a spring carried by the other ofsaid members and adapted to bear on the fiat portions of said pintle.

13. In a sewing machine attachment, a

`normally pressing said pusher-bar in one dipusher-bar movable back andforth, a spring normally pressing said pusher-bar in one direction, acam for moving said pusher-bar in both directions and against the actiono'fsaid spring, and means for rotating said cam.

i4. In a sewing-machine attachment, a pusher-bar movable back and forth,a spring rection, a cam engaging directly with said pusher-bar forpositively moving the same in both directions and against the action ofsaid sprin g, and means for rotating said cam.

15. In a sewing machine attachment, a pusher-bar movable back and forthand provided with a recess, a plate registering with said recess forlimiting the movement of said pusher-bar, a spring normally pressingsaid pusher-bar in one direction, a cam engaging with said pusher-barfor moving the same in both directions and against the action of saidspring, and means for rotating said cam.

16. In a sewing-machine attachment, a pusher-bar movable back and forthand provided with a recess, a plate registering with said recess tolimit the movement of said pusher-bar, a cam for moving said pusherbarin both directions, and means for rotati-ng said cam.

17. In a sewing-machine attachment', a pusher-bar movable back and forthand pro; vided with a recess, a plate registering Withsaid recess tolimit the movement of said pusher-bar, a spring normally pressing saidpusher-bar in one direction, a cam engaging with said pusher-bar forpositively moving the' same in both directions and against the actionofy said spring, and means for rotating said cam. v

18. In a sewing-machine attachment, a pusher-bar movable back and forth,extensions carried by said pusher-bar, a spring normally pressing saidpusher-bar in one direction, a cam mounted between said extensions forpositively moving said pusher-bar in both directions and against theaction of said spring, and means for rotating said cam.

19. In a sewing-machine attachment, a pusher-bar movable back and-forthand provided with a recess, a plate registering with said recess tolimit the movement of said pusher-bar, extensions carried by saidpusherbar, a cam mounted between said extensions for positively movingsaid pusher-bar in both directions, and means for rotating said cam.

20. In a sewing-machine attachment, a pusher-bar movable back and forthand provided with a recess, a plate registering with said recess tolimit the movement of said pusher-bar, a spring normally pressing saidpusher-bar in one direction, extensions carried by said pusher-bar, acam mounted between said extensions for positively moving saidpusher-bar in both directions and against the action of said spring, andmeans for rotating'said cam.

21. In a sewing.- machine attachment, a pusher-barmovable back andforth, a spring IDO IIO

normally pressing said pusher-bar in one direction, a camfor-reciprocating said pusherbar in both directions and against theaction of said spring, a gear for rotating said cam, a slide-bar adaptedto be reci procated by the needle-bar of a sewing-machine, and a pawlcarried by said slide-bar and adapted to engage with said gear to rotatethe same.

22. In a sewing-machine attachment, a pusher-bar movable back and forthand provided with a recess, a plate registering with said recess tolimit the movement of said pusher-bar, a cam for reciprocating saidpusher-bar in both directions, a gear for rotating said cam, a slide-baradapted to be reciprocated by the needle-bar of a sewing-machine, and apawl carried by said slide-bar adapted to engage with said gear torotate the same.

23. In a sewing machine attachment, a pusher-bar movable back and forthand provided with a recess, a plate registering with said recess tolimit the movement of said pusher-bar, a spring normally pressing saidpusher-bar in one direction, a cam for reciprocating said pusher-bar inboth directions and against the action of said spring, a gear forrotating said cam, a slide-bar adapted to be reciprocated bytheneedle-bar of a sewingmachine, and a pawl carried by said slide-baradapted to engage with said gear to rotate the same.

24. In a sewingmachine attachment, a pusher-bar movable back and forthand provided with a recess, a plate registering with said recess tolimit the movement of said pusher-bar, a spring normally pressing saidpusher-bar in one direction, extensions carried by said pusher-bar, acam mounted between said extensions adapted to bear on one or the otherfor positively moving said pusherbar in both directions and against theaction of said spring, a gear for rotating said cam, a slide-bar adaptedto be reciprocated by the needle-bar of a sewing-machine, and a pawlcarried by said slide-bar and adapted to engage with said gear to rotatethe same.

25. In a sewing-machine a presser-foot in combination with an attachmenthaving a base provided with a guideway, a pusher-bar movable in saidgnideway, a standard mounted on said base and provided with a guideway,a slide-bar movable in said gnideway of the Astandard and adapted to bereciprocated by the needle-bar of a sewing-machine, means for limitingthe movement of said slide-bar, a cam engaging with said pusher-bar toreciprocate the same, a gear for rotating said cam, and a pawl carriedby said slide-bar for rotating said gear.

26. In a sewing-machine a presser-foot in combination with an attachmenthaving a base provided with a guideway, a pusher-bar movable back andforth in said guideway, a standard mounted on said base and providedwith a guideway, a slide-bar movable in said guideway in the standardand adapted to be reciprocated by the needle-bar of a sewingmachine,` acam engaging directly with said pusher-bar for positively moving thesame in both directions, a gear for rotating said cam, and a pawlcarried by said slide-bar for rotating said gear.

27. In a sewing-machine a presser-foot in combination with an attachmenthaving a base provided with a guideway, a pusher-bar movable back andforth in said guideway, a

standard mounted on said base and provided with a guideway, a slide-barmovable in said guideway in the standard and adapted to be reciprocatedby the needle-bar of a sewingmachine, extensions carried by saidpusherbar, a cam mounted between said extensions and adapted to bear onone or the other for positively moving said pusher-bar in bothdirections, a gear for rotating said cam, and a pawl carried by saidslide-bar for rotating said gear.

In testimony whereof We hereunto affix our signatures in the presence oftwo witnesses.

THOMAS H. ROSS. EDWIN DONALDSON.

Witnesses:

T. F. FAY, ADELAIDE MARSHALL.

